… or may not be combed before being converted into rovings. Combing, which is chiefly practised for the spinning of long … into cans, whereas rovings are usually put up on large bobbins. Laps are normally rolled onto wooden rollers. The …
… silicates and carbon obtained by partial calcination of bituminous shales. (b) Silica black obtained by calcination … , i.e., inorganic pearlescent pigments, such as : (a) bismuth chloride oxide, with the addition of a small … large quantities of surface-active products or with organic binders. These are used for colouring in the mass plastics, …
… polishers (CMP) , which flatten and polish a wafer by combining chemical removal with mechanical buffing. (B) … which deposit various types of films which are obtained by combining the appropriate gases in a reactant chamber at …
… casks and drums for alcohol, latex, caustic soda, calcium carbide, dyestuffs or other chemicals. The smaller … for butter, milk, beer, preserves, fruit or fruit juices, biscuits, tea, confectionery, tobacco, cigarettes, shoe …
… . A hydroxyethyltrimethylammonium hydroxide found in the bile, in the brain, in egg-yolk, and in all fresh seeds. A compound from which other very important biological substances are derived (e.g., acetylcholine, …
… coatings and in moulded articles, for example, aircraft and automobile parts, pump impellers. (3) Polysulphones are … the product obtained by reacting the sodium salt of bisphenol A (4,4’‑isopropylidene‑diphenol) with bis …
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